There are a few differences between the A530 and A540 (besides the resolution) that are worth pointing out. The A530 has a 1.8" LCD, compared to the 2.5" screen on the A540. While the A540 can record movies at 640 x 480, 30 frames/second, the A530's frame rate is a sluggish 10 fps. The A540 has shutter and aperture priority modes, while the A530 only has a manual mode (where you set both the aperture and shutter speed). And finally, only the A540 supports conversion lenses and an underwater case..



Link: DCResource